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31 terms

4th Science Chap. 3 1-2

4th Science Chap. 3 1-2
STUDY
PLAY
A system
is made of many parts that work together for a purpose.
ecosystem
is all the living and nonliving things in an environment and they all work together
population
is all the members of one species that live within an area of an ecosystem
community
different populations that interact with each other in the same area
niche
the specific role an organism has in its habitat
herbivores
consumers who get energy by eating only plants
carnivores
consumers that eat only animals
omnivores
consumers that eat both plants and animals
decomposers
digest the waste and remains of dead plants and animals
Desert System
The driest ecosystem. Some plants and animals have adapted to
the limited water supply. Cactuses, shrubs, coyotes, and roadrunners are this ecosystems organisms.
Grassland
This ecosystem is covered with tall grasses. They receive a medium amount of rain. Grasshoppers, prairie chickens, and bison are
animals that live in this ecosystem of North America.
Tundra
This ecosystem is a cold, dry region. The ground beneath the surface is frozen all year long. Some grasses can grow in a tundra, but trees cannot. In the spring and summer, arctic foxes, caribou, and other animals thrive in these areas.
Forest
This ecosystem is filled with trees, wildflowers, and animals. This area gets more rain than grasslands. Deer, foxes, raccoons, and squirrels often live here.
Tropical Rainforest
This ecosystem is always wet. They get rain year-round. This area supports thousands of species of plants and animals. Colorful birds such as the toucan and beautiful flowers such as the orchid live here.
Consumer
living things that eat other organisms
prey
any animal hunted by others for food
producer
living thing that makes its own food (ex. plants)
Habitat
area or place where an organism lives in an ecosystem
Adaptation
trait that helps a living thing survive in its environment
Food Web
a system of overlapping food chains in which the flow of energy branches out in many directions
Food Chain
the process by which energy moves from one type of living thing to another
Food Chain always begins with?
sunlight
Decay
eventually all living things eventually die and rot
Water Ecosystem
Since almost three-fourths of Earth's surface is covered
with water, many organisms live in here.
...
Organisms that live in the saltwater habitats of oceans are
different from organisms that live in freshwater habitats.
...
The producers in this ecosystem are as large as
bald cypress trees, or as small as single-celled algae.
The Okefenokee Swamp
is a freshwater ecosystem. It is home to many plants, fish, water `birds, and other animals.
Everglades National Park
has both freshwater and saltwater ecosystems. Much of the Everglades is covered with sawgrass. Alligators, fish, water birds, and other animals live here.
Coral reefs
are in shallow ocean areas. All ocean water is salty. Coral reefs have many different organisms. The fish that live in this ecosystem are very colorful.
The deep sea
is another saltwater ecosystem. The organisms here must live without light.
Name 2 things that effect the rate of decay
temperature (cold more slowly, hot more quickly) and moisture